How to extract a specific value from Json response and use this value in the input payload json file in Rest Assured Automation Testing

Question

I am not using any POJO Classes. Instead i am using External json file as payload file for 2 of my API's (Get API and Delete API).

Add API >> Adds the book name, book shelf, other book details along with unique place_id. Delete API >> Used to delete a book from specific rack using the unique place_id from above.

Since I am using external json payload input file, please let me know the way to pass the "place_id" grabbed from GET API and send this place_id to DELETE API external json file and then use it

Add Place API below: This API returns unique Place_ID in the response

{
  "location": {
    "lat": -38.383494,
    "lng": 33.427362
  },
  "accuracy": 50,
  "name": "Frontline house 1",
  "phone_number": "(+91) 983 893 3937",
  "address": "2951, side layout, cohen 09",
  "types": [
    "shoe park",
    "shop"
  ],
  "website": "http://google.com",
  "language": "French-IN"
}

Delete Place API below:

{
  "place_id": "<need to insert place_id from above response>"
}

Please add a [minimal, reproducible example](https://stackoverflow.com/help/minimal-reproducible-example) to your question. — kaweesha, Nov 19 '20 at 11:24

score 0 · Answer 1 · answered Nov 25 '20 at 06:33

You can do this using json-simple library in java. json-simple maven repository

imports

import io.restassured.RestAssured;
import io.restassured.path.json.JsonPath;
import io.restassured.response.Response;
import org.json.simple.JSONObject
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;

import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

You have to get to the following;

Retrieve place_id from Add Place API json response
Read request body of Delete Place API from json file
Replace the place_id value in request body of Delete Place API

Write the new request body to Delete Place API json file

// Retrieve place_id from Add Place API json response
Response response = RestAssured
        .when()
        .get("add_place_api_url")
        .then()
        .extract()
        .response();

JsonPath jsonPath = response.jsonPath();

String placeId = jsonPath.get("place_id");

// Read request body of Delete Place API from json file
JSONObject jsonObject = new JSONObject();
JSONParser parser = new JSONParser();
try {
    Object obj = parser.parse(new FileReader("path/DeletePlaceRequestBody.json"));

    jsonObject = (JSONObject) obj;

    // Replace the place_id value in request body of Delete Place API
    jsonObject.replace("place_id", placeId);

} catch (IOException e) {
    e.printStackTrace();
} catch (ParseException e) {
    e.printStackTrace();
}

// Write the new request body to Delete Place API json file
try {
    FileWriter file = new FileWriter("DeletePlaceRequestBody.json");
    file.write(jsonObject.toString());

    file.flush();
    file.close();
} catch (IOException e) {
    e.printStackTrace();
}

How to extract a specific value from Json response and use this value in the input payload json file in Rest Assured Automation Testing

1 Answers1